"""뉴스 소스 관리 API"""

from typing import Annotated

from fastapi import APIRouter, Depends, HTTPException
from pydantic import BaseModel
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from core.auth import get_current_user
from core.database import get_session
from models.news_source import NewsSource
from models.user import User

router = APIRouter()


class NewsSourceResponse(BaseModel):
    id: int
    name: str
    country: str | None
    feed_url: str
    feed_type: str
    category: str | None
    language: str | None
    enabled: bool
    last_fetched_at: str | None
    created_at: str

    class Config:
        from_attributes = True


class NewsSourceCreate(BaseModel):
    name: str
    country: str | None = None
    feed_url: str
    feed_type: str = "rss"
    category: str | None = None
    language: str | None = None


class NewsSourceUpdate(BaseModel):
    name: str | None = None
    feed_url: str | None = None
    category: str | None = None
    enabled: bool | None = None


@router.get("/sources")
async def list_sources(
    user: Annotated[User, Depends(get_current_user)],
    session: Annotated[AsyncSession, Depends(get_session)],
):
    result = await session.execute(select(NewsSource).order_by(NewsSource.id))
    return [NewsSourceResponse.model_validate(s) for s in result.scalars().all()]


@router.post("/sources")
async def create_source(
    body: NewsSourceCreate,
    user: Annotated[User, Depends(get_current_user)],
    session: Annotated[AsyncSession, Depends(get_session)],
):
    source = NewsSource(**body.model_dump())
    session.add(source)
    await session.commit()
    return NewsSourceResponse.model_validate(source)


@router.patch("/sources/{source_id}")
async def update_source(
    source_id: int,
    body: NewsSourceUpdate,
    user: Annotated[User, Depends(get_current_user)],
    session: Annotated[AsyncSession, Depends(get_session)],
):
    source = await session.get(NewsSource, source_id)
    if not source:
        raise HTTPException(status_code=404)
    for field, value in body.model_dump(exclude_unset=True).items():
        setattr(source, field, value)
    await session.commit()
    return NewsSourceResponse.model_validate(source)


@router.delete("/sources/{source_id}")
async def delete_source(
    source_id: int,
    user: Annotated[User, Depends(get_current_user)],
    session: Annotated[AsyncSession, Depends(get_session)],
):
    source = await session.get(NewsSource, source_id)
    if not source:
        raise HTTPException(status_code=404)
    await session.delete(source)
    await session.commit()
    return {"message": f"소스 {source_id} 삭제됨"}


@router.get("/articles")
async def list_articles(
    user: Annotated[User, Depends(get_current_user)],
    session: Annotated[AsyncSession, Depends(get_session)],
    source: str | None = None,
    unread_only: bool = False,
    page: int = 1,
    page_size: int = 30,
):
    """뉴스 기사 목록"""
    from sqlalchemy import func
    from models.document import Document

    query = select(Document).where(
        Document.source_channel == "news",
        Document.deleted_at == None,
    )
    if source:
        query = query.where(Document.ai_sub_group == source)
    if unread_only:
        query = query.where(Document.is_read == False)

    count_q = select(func.count()).select_from(query.subquery())
    total = (await session.execute(count_q)).scalar()

    query = query.order_by(Document.is_read.asc(), Document.created_at.desc())
    query = query.offset((page - 1) * page_size).limit(page_size)
    result = await session.execute(query)
    items = result.scalars().all()

    from api.documents import DocumentResponse
    return {
        "items": [DocumentResponse.model_validate(doc) for doc in items],
        "total": total,
        "page": page,
    }


@router.post("/mark-all-read")
async def mark_all_read(
    user: Annotated[User, Depends(get_current_user)],
    session: Annotated[AsyncSession, Depends(get_session)],
):
    """전체 읽음 처리"""
    from sqlalchemy import update
    from models.document import Document

    result = await session.execute(
        update(Document)
        .where(Document.source_channel == "news", Document.is_read == False)
        .values(is_read=True)
    )
    await session.commit()
    return {"marked": result.rowcount}


@router.post("/collect")
async def trigger_collect(
    user: Annotated[User, Depends(get_current_user)],
):
    """수동 수집 트리거"""
    from workers.news_collector import run
    import asyncio
    asyncio.create_task(run())
    return {"message": "뉴스 수집 시작됨"}